Acanthochitona roseojugum Lyons, 1988. Scanning electron images of a specimen from Isla Perez (CNMO4995, 3 mm length). A Dorsal view of head valve (I), SB = 200 μm B dorsal view of tail valve (VIII), SB = 200 μm C dorsal view of intermediate valve IV, SB = 200 μm D detail of pustules of intermediate valve IV, SB = 20 μm E girdle spicules, SB = 100 μm F girdle tuft detail, SB = 100 μm G detail of girdle spicules, SB = 10 μm.